diff --git a/tp.go b/tp.go
index 5838efa..edd4ea7 100644
--- a/tp.go
+++ b/tp.go
@@ -121,7 +121,12 @@ func renderPercentage(percentage float64) string {
 
 // Get the percentages between two float64s
 func calcPercentageFloat64(full float64, part float64) float64 {
-	return part / (full / 100)
+	var percentage float64
+	percentage = part / (full / 100)
+	if percentage >= 100 {
+		percentage = percentage - 100
+	}
+	return percentage
 }
 
 // Get the start of the year.